Airtightness testing device with quick connection and disconnection and quick connector thereof

Abstract

The present application relates to the field of air tightness detection, and more particularly to a quick-connecting and quick-detaching air tightness testing device and a quick connector thereof, comprising a first connecting piece, a second connecting piece and an elastic sleeve, the second connecting piece is provided with a socket, and the first connecting piece is inserted into the socket, and the first connecting piece is inserted into the socket and penetrates the elastic sleeve. The first connecting piece comprises a pressing portion, an extension portion and a wedge-shaped portion. The elastic sleeve is sleeved on the extension portion. When connecting, the quick connector is abutted with the device to be detected, the elastic sleeve and the wedge-shaped portion are inserted into the air hole of the device to be detected, the wedge-shaped portion is extruded to deform outwardly by moving the extension portion to the direction of the pressing portion, the elastic sleeve is expanded to block the air hole, thereby realizing the quick connection with the device to be detected. When disassembling, the wedge-shaped portion is separated from the elastic sleeve by the pressing portion, the elastic sleeve is sleeved on the extension portion and shrinks, and the first connecting piece can be taken out of the air hole, thereby realizing the quick disassembly from the device to be detected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air tightness detection, in particular to a quick connection and disassembly air tightness testing device and a quick connector thereof. BACKGROUND

[0002] The air tightness testing device is used for detecting the air tightness of pneumatic equipment, pneumatic components and related accessories. The ordinary air tightness testing device needs to connect the equipment through a connector or a flange or a fastening bolt. When the air tightness testing device is used for flow line detection, the fastening bolt needs to be repeatedly disassembled and assembled, which is low in operation efficiency and easy to cause errors of the operator. SUMMARY

[0003] Therefore, the present application provides a quick connection and disassembly air tightness testing device and a quick connector thereof.

[0004] The technical scheme of the present application is as follows: a quick connection and disassembly air tightness testing device and a quick connector thereof, comprising a first connector, a second connector and an elastic sleeve, the second connector is provided with a socket, the first connector is inserted into the socket, and the first connector is inserted into the socket and passes through the elastic sleeve;

[0005] The first connector comprises a pressing portion, an extension portion and a wedge-shaped portion which are sequentially communicated, the outer diameter of the outer periphery surface of the wedge-shaped portion gradually increases from the end close to the extension portion to the end away from the extension portion, and the minimum outer diameter of the outer periphery surface of the wedge-shaped portion is greater than or equal to the outer diameter of the outer periphery surface of the extension portion.

[0006] When the elastic sleeve is sleeved on the extension portion, the wedge-shaped portion moves along the axial direction to the second connector, and the wedge-shaped portion can extrude the elastic sleeve to deform outward.

[0007] Optionally, the third connector is movably sleeved on the second connector and can move relative to the second connector in the axial direction and / or the circumferential direction.

[0008] Optionally, the sealing ring is arranged at the end of the third connector away from the pressing portion.

[0009] Optionally, the socket is provided with a limiting portion at the end close to the wedge-shaped portion of the inner side wall, the spring is arranged between the first connector and the second connector and is sleeved on the extension portion, one end of the spring abuts against the limiting portion, and the other end of the spring abuts against the pressing portion.

[0010] Optionally, when the spring is extruded under the action of the pressing portion, the wedge-shaped portion is separated from the elastic sleeve, and when the spring is reset, the wedge-shaped portion extrudes the inner side wall of the elastic sleeve.

[0011] Another object of the present application is to provide a quick connection and disconnection air tightness testing device, which comprises an air compressor, a connecting pipe and the quick connector in sequence.

[0012] Optionally, the connecting pipe comprises a pipe body, a fourth connecting piece and a fifth connecting piece, the fourth connecting piece is fixedly connected with one end of the pipe body close to the quick connector, and the fifth connecting piece is arranged between the fourth connecting piece and the pressing part, and the fifth connecting piece is detachably connected with the fourth connecting piece.

[0013] Optionally, the connecting pipe further comprises a nut, and the fifth connecting piece is detachably connected with the fourth connecting piece through the nut.

[0014] Compared with the prior art, the embodiment of the present application has the following beneficial effects:

[0015] The quick connection and disconnection air tightness testing device and the quick connector thereof are connected, the quick connector is abutted with the device to be detected, the elastic sleeve and the wedge-shaped part are inserted into the air hole of the device to be detected, the wedge-shaped part is extruded to deform outwardly by moving the extension part to the direction of the pressing part, the elastic sleeve is expanded to block the air hole, so that the quick connection with the device to be detected is realized. When disassembled, the wedge-shaped part is separated from the elastic sleeve by the pressing part, the elastic sleeve is sleeved on the extension part and shrinks, and the first connecting piece can be taken out of the air hole, so that the quick disassembly from the device to be detected is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structure schematic view of the quick connector of the quick connection and disconnection air tightness testing device and the quick connector thereof according to the embodiment of the present application.

[0017] Figure 2 is a structure schematic view of the spring in the stretched state of the quick connector.

[0018] Figure 3 is a structure schematic view of the spring in the compressed state of the quick connector.

[0019] Legend of reference signs:

[0020] 100, quick connection and disconnection air tightness testing device,

[0021] 1, quick connector, 11, first connecting piece, 111, pressing part, 112, extension part, 113, wedge-shaped part, 12, second connecting piece, 13, elastic sleeve, 14, third connecting piece, 15, sealing ring, 16, spring,

[0022] 2, air compressor,

[0023] 3, connecting pipe, 31, pipe body, 32, fourth connecting piece, 33, fifth connecting piece, 34, nut,

[0024] A, to be detected device. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, the terms "first", "second", and the like are used in the present application to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0028] Reference Figure 2 and Figure 3The embodiment provides a quick connector 1, which comprises a first connecting piece 11, a second connecting piece 12 and an elastic sleeve 13. The second connecting piece 12 is provided with a socket, the first connecting piece 11 is inserted into the socket, and the first connecting piece 11 is inserted into the socket and penetrates the elastic sleeve 13. The first connecting piece 11 comprises a pressing portion 111, an extension portion 112 and a wedge-shaped portion 113 which are sequentially communicated. The outer diameter of the outer periphery surface of the wedge-shaped portion 113 gradually increases from the end close to the extension portion 112 to the end away from the extension portion 112, and the minimum outer diameter of the outer periphery surface of the wedge-shaped portion 113 is greater than or equal to the outer diameter of the outer periphery surface of the extension portion 112. When the elastic sleeve 13 is sleeved on the extension portion 112, the wedge-shaped portion 113 moves along the axial direction to the second connecting piece 12, and the wedge-shaped portion 113 can extrude the elastic sleeve 13 to deform outward. When connecting, the quick connector 1 is abutted with a device A to be detected, the elastic sleeve 13 and the wedge-shaped portion 113 are inserted into a gas hole of the device A to be detected, the wedge-shaped portion 113 extrudes the elastic sleeve 13 to deform outward by moving the extension portion 112 to the direction of the pressing portion 111, and the elastic sleeve 13 is expanded to block the gas hole, so that the quick connection with the device A to be detected is realized. When disassembling, the wedge-shaped portion 113 is separated from the elastic sleeve 13 by the pressing portion 111, the elastic sleeve 13 is sleeved on the extension portion 112 and shrinks, and the first connecting piece 11 can be taken out from the gas hole, so that the quick disassembly from the device A to be detected is realized. The minimum outer diameter of the outer periphery surface of the wedge-shaped portion 113 is greater than the outer diameter of the outer periphery surface of the extension portion 112, and the wedge-shaped portion 113 and the extension portion 112 are transitioned through a circular arc, so that the jamming of the elastic sleeve 13 in the extension portion 112 and the wedge-shaped portion 113 is avoided, and the machining error between the extension portion 112 and the wedge-shaped portion 113 is also avoided. In other embodiments, the minimum outer diameter of the outer periphery surface of the wedge-shaped portion 113 can be equal to the outer diameter of the outer periphery surface of the extension portion 112.

[0029] Preferably, referring to Figure 2 and Figure 3 In the embodiment, the quick connector 1 further comprises a third connecting piece 14, the third connecting piece 14 is movably sleeved on the second connecting piece 12, and can relatively move with the second connecting piece 12 in the axial direction and / or the circumferential direction. When connecting, the third connecting piece 14 is abutted with the device A to be detected, so that the quick connector 1 is relatively fixed with the device A to be detected, and the shaking of the quick connector 1 caused by the movement of the first connecting piece 11 is prevented, so that the gap between the elastic sleeve 13 and the gas hole is avoided.

[0030] Preferably, referring to Figure 2 and Figure 3In the embodiment, the quick connector 1 further comprises a sealing ring 15 arranged at the end of the third connecting piece 14 away from the pressing part 111. The sealing ring 15 can ensure the sealing of the third connecting piece 14 and the device A to be detected. Even if there is a gap between the elastic sleeve 13 and the air hole, the sealing effect can be achieved under the action of the sealing ring 15.

[0031] Preferably, referring to Figure 2 and Figure 3 In the embodiment, the quick connector 1 further comprises a spring 16. The end of the inner side wall of the insertion hole close to the wedge-shaped part 113 is provided with a limiting part. The spring 16 is arranged between the first connecting piece 11 and the second connecting piece 12, and is sleeved outside the extension part 112. One end of the spring 16 abuts against the limiting part, and the other end abuts against the pressing part 111. When the first connecting piece 11 moves towards the second connecting piece 12, the spring 16 is compressed under the action of the pressing part 111 and the limiting part. The wedge-shaped part 113 is separated from the elastic sleeve 13. When the spring 16 is reset, the wedge-shaped part 113 extrudes the elastic sleeve 13 to make the elastic sleeve 13 protrude and deform outward. Under the action of the spring 16, the first connecting piece 11 moves away from the device A to be detected, and the elastic sleeve 13 is relatively static with the device A to be detected under the action of the second connecting piece 12. Thus, the wedge-shaped part 113 can be inserted into the elastic sleeve 13, so that the elastic sleeve 13 is expanded to achieve the effect of plugging the air hole.

[0032] The embodiment further provides a gas tightness testing device 100 which can be quickly connected and detached. Preferably, referring to Figure 1 The gas tightness testing device 100 which can be quickly connected and detached comprises the air compressor 2, the connecting pipe 3, and the quick connector 1 described above. The elastic sleeve 13 is fixedly connected to the end of the second connecting piece 12 away from the connecting pipe 3.

[0033] Preferably, referring to Figure 1 In the embodiment, the connecting pipe 3 comprises a pipe body 31, a fourth connecting piece 32, and a fifth connecting piece 33. The fourth connecting piece 32 is fixedly connected to the end of the pipe body 31 close to the quick connector 1. The fifth connecting piece 33 is arranged between the fourth connecting piece 32 and the pressing part 111, and is detachably connected to the fourth connecting piece 32. The connecting pipe 3 further comprises a nut 34. The fifth connecting piece 33 and the fourth connecting piece 32 are detachably connected through the nut 34. Different specifications of the device A to be detected have different air holes. When the specifications of the elastic sleeve 13 and the wedge-shaped part 113 do not match the air hole, different specifications of the quick connector 1 and the fourth connecting piece 32 need to be replaced, so as to ensure the sealing between the connecting pipe 3, the quick connector 1, and the device A to be detected. Specifically,

[0034] The air tightness testing device 100 provided by the embodiment can be quickly connected and detached with the device A to be detected through the quick connector 1, and the air tightness is tested through the air compressor 2. The quick connection and detachment steps of the quick connector 1 are as follows.

[0035] When the quick connection is performed, the first connecting piece 11 is pressed to extrude the spring 16 by the pressing part 111, the elastic sleeve 13 is contracted and sleeved outside the extension part 112, the third connecting piece 14 is abutted with the surface of the device A to be detected, the sealing ring 15 is sealed between the device A to be detected, and the wedge-shaped part 113 and the elastic sleeve 13 are arranged in the air hole of the device A to be detected. The first connecting piece 11 is released, the first connecting piece 11 is moved to the connecting pipe 3 under the action of the spring 16, the wedge-shaped part 113 is inserted into the elastic sleeve 13, the elastic sleeve 13 is expanded to achieve the effect of plugging the air hole.

[0036] When the quick detachment is performed, the first connecting piece 11 is pressed to extrude the spring 16 by the pressing part 111, the elastic sleeve 13 is relatively static with the device A to be detected under the action of the second connecting piece 12, the wedge-shaped part 113 is moved to make the elastic sleeve 13 contract and be sleeved outside the extension part 112, and then the quick connector 1 can be separated from the device A to be detected.

[0037] The above is the preferred embodiment of the present application. It should be noted that the ordinary skilled in the art can make several improvements and modifications without departing from the principles of the present application, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims

1. A quick connector characterized by, The first connecting piece, the second connecting piece and the elastic sleeve, the second connecting piece is provided with a socket, the first connecting piece is inserted into the socket and passes through the elastic sleeve; The first connecting piece comprises a pressing part, an extension part and a wedge-shaped part which are sequentially connected, the outer diameter of the outer surface of the wedge-shaped part gradually increases from the end close to the extension part to the end away from the extension part, and the minimum outer diameter of the outer surface of the wedge-shaped part is greater than or equal to the outer diameter of the outer surface of the extension part; When the elastic sleeve is sleeved on the extension part, the wedge-shaped part moves along the axial direction to the second connecting piece, and the wedge-shaped part can extrude the elastic sleeve to deform outward; The third connecting piece is movably sleeved on the second connecting piece, and can move relative to the second connecting piece in the axial direction and / or the circumferential direction, and when connected, the third connecting piece abuts against the device to be detected, so that the elastic sleeve is relatively stationary with the device to be detected under the action of the second connecting piece, the wedge-shaped part is inserted into the elastic sleeve, and the elastic sleeve is expanded to achieve the effect of plugging the air hole; The sealing ring is arranged at the end of the third connecting piece away from the pressing part.

2. The quick coupling of claim 1, wherein, The spring is arranged between the first connecting piece and the second connecting piece, and is sleeved on the extension part, one end of the spring abuts against the limiting part, and the other end abuts against the pressing part.

3. The quick coupling of claim 2, wherein, When the spring is extruded under the action of the pressing part, the wedge-shaped part is separated from the elastic sleeve, and when the spring is reset, the wedge-shaped part extrudes the inner side wall of the elastic sleeve.

4. A quick connectable and disconnectable air tightness testing device, characterized in that, The connecting pipe comprises a pipe body, a fourth connecting piece and a fifth connecting piece, the fourth connecting piece is fixedly connected with the pipe body at the end close to the quick connector, the fifth connecting piece is arranged between the fourth connecting piece and the pressing part, and the fifth connecting piece is detachably connected with the fourth connecting piece.

5. The quickly connectable and detachable air tightness testing device according to claim 4, wherein, The connecting pipe further comprises a nut, and the fifth connecting piece and the fourth connecting piece are detachably connected through the nut.

6. The quickly connectable and detachable air tightness testing device according to claim 5, wherein, The connecting pipe further comprises a nut, and the fifth connecting piece and the fourth connecting piece are detachably connected through the nut.

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